郑州市第四纪沉积地层的空间分布特征与规律研究,与探明人类早期文明在黄河沿岸,特别是在郑州周边地区的诞生和发展关系密切,对现代城市规划布局、地下空间开发利用以及黄河生态保护与高质量发展也具有重要的支撑作用.为此,郑州市开展了地质旅游与地质文化资源调查工作,在主城区及周边不同地貌单元的第四纪沉积覆盖区实施了38 个沉积钻孔,其中有9 个为钻穿第四系的深部钻孔.根据深部钻孔分析,结合已有的HK-GA孔勘探成果,在准确划分各钻孔第四纪沉积地层结构的基础上,分别建立了各种地貌单元的标椎地层柱;通过分析对比这些不同地貌单元沉积地层的变化特征,取得了在东部平原区早更新世与中更新世普遍存在风成沉积,晚更新世转为河流与湖沼相沉积的认识和实证;沉积物物源特性分析结果,从侧面证实了黄河沉积物在区内的沉积时间可能始于晚更新世时期.

Tantou Town-Qiupa Township area of Luanchuan County in Henan Province is the main producing area of Luanchuan meihua stone. In order to study the characteristics of Luanchuan meihua stone resource ,the field exploration was implemented,the physical and chemical properties were tested and analyzed. The results show that its original rock is intermediate-acidic igneous rock of Mesoproterozoic Xiong'er Group,including amygdaloidal andesite,amygdaloidal trachyandesite,amygdaloidal rhyolite,amygdaloidal dacite and amygdaloidal basaltic andesite. The Luanchuan meihua stone is abundant,has no radioactive pollution and high compression strength,with high value of ornamental and collection. Finally,some suggestions on the rational development and utilization of the Luanchuan meihua stone are raised.

In Wulongfeng loess section of Yellow River National Geological Park of Zhengzhou ,66 m thick loess were deposited in a short span of 120 000 years,which is much faster than other loess plateau regions. This is the characteristics of stratigraphy sedimentation in the area. With the combination method of field survey and indoor test analysis,by testing stratigraphic fossils,particle size and magnetic susceptibility,we comprehensively analyzed the sedimentary environment of Wulongfeng loess section. The result shows that since the late period of Middle Pleistocene to the middle period of Late Pleistocene,this area undergone three large-scale paleoclimate cycles. The study provides scientific guidance for the changes of local paleoclimate and paleoenvironment ,and the geological investigation,and provides theoretical support for the popularization of science of geological park.

According to the study of Cathaysian flora and coal-bearing strata in Yuzhou,in Dafengkou area between Shenhou town and Muojie village,the total Carboniferous-Permian exposed coal bearing strata thickness exceeds 950m,most of the coal seam number up to 89.We can find a natural outcrop of almost all of coal-bearing positions in northern China and Southern China here.The discover of this Cathaysian flora is a'iron pillar'of North China Late Paleozoic coal-forming basin study,and it plays the role of a pacesetter of coalfield geological exploration,stratigraphic correlation of Henan province.Under identification,the plant fossil excavated here contained 112 genera and 306 species,of which 137 species belong to 12 types of plants.In addition,there are clay beddings which used to fire Jun porcelain.